bager



Patented J 1111024, 1919.

2 SHEETS-SHEET 1.

S. R. W. M. BAGER.

BANK SPUD. APPLICATION FILED APR-2| I917.

Wine 356,5

S. R. W. M. BAGER.

BANK SPUD.

APPLICATION FILED. APR, 2, IBM.

Patehted June 24, 1919.

2 SHEETSSHEET 2.

- fizz/6722507", fiva a e RWJZBgen ms. Nonm psrsns ca. M40104. on WASHINGTON. n. c.

UNITED STATES PATENT onnron.

SVAN TE R. W. M. BAGER, OF SOUTH MILWAUKEE, WISCONSIN, ASSIGNOR TO BUCYRUS COMPANY, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

BAN K-SPUD.

Specification of Letters Patent.

Patented June 24, 1919.

Application filed April 2, 1917. Serial No. 159,078.

To all whom it may concern:

Be it known that I, SVANTE R. W. M. BAGER, a citizen of the United States, residing at South Milwaukee, in the county of Milwaukee and State of Nisconsin, have invented a certain new and useful Improvement in Bank-Spuds, of which the following is a specification.

My invention relates'to improvements in bank spuds such as may be used in connection with dredges and other types of excavators. One of the objects of my invention is to provide a bank spud which may also be used in substantially the same manner as the ordinary type of vertical spud. Another object is to provide a bank spud and supporting guiding and controlling means of unusual strength and rigidity. Another object is to provide such a connection between a bank spud and its anchorage as to distribute the load symmetrically over the dredge and particularly to apply a large portion of the load to the main A frame which supports the excavating member. Another object of my invention is to provide in combination with the dredge and the spud, three adjacent triangular panels one of them comprising a main A frame erected on the dredge, another comprising an auxiliary spud supporting A frame erected upon one leg of the main A frame at its base, and a third a triangular A frame made up of one leg of the auxiliary A frame, the spud and a guiding and pivoting leg. Other objects are to provide a new and improved form of controlling and locking means for the spud. Other objects will appear from time to time in the specification. My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein Figure 1 is a front elevation of a dredge with parts omitted showing my invention applied thereto;

Fig. 2 is a detail on an enlarged scale, part in section and part in elevation, showing the spud locking and part of the spud controlling means;

end of the scow is the A frame structure A adapted to support the usual type of excavating apparatus not here illustrated because forms no part of my invention. This A frame structure is made up of the two side legs A A joined together at their upper apex by a tie plate A and pivoted at their lower ends on brackets A on the upper deck of the scow, so that the A frame may rotate in a plane, that is, in a vertical plane parallel with the axis of the scow.

Erected upon the leg A of the main A frame is a spud A frame made up of the legs B, B The leg B is rigidly attached to the plate A at one end and to a gusset plate B at the other end. The leg B is attached at one end to the bracket A on the deck of the scow, at the other end to the gusset plate B so that we have two A frames or triangular frames side by side in fixed relation one with another, having one common side. B is a stirrup pivoted on the gusset plate B and it contains the spud B slidable therein. B is a movable guiding leg pivoted at one end on the bracket A on the scow, at the other end pivoted on the lower end of the spud 13*. B is a supporting frame made up of a crib of wood or other similar structure adapted to support pressure upon the surface of the ground alongside the cut or at the bottom of the channel. It is connected to the end of the spud B" by means of a ball and socket joint B as shown. 13 is a hoisting cable leading from a suitable source of power on the scow not here shown, passing up over a sheave B suspended from the gusset plate B down over a sheave B on the end of the spud, back up to an anchor link B on the gusset plate B The spud is reinforced in the usual manner by the angles O at the corners, and it is provided alon the side toward the dredge with a rack O C is a dog slidable 1n guides O on the stirrup B provided with a sleeve O adapted to engage the rack O It will be noted that the bearing sleeve C which contains the pin O upon which the stirrup is pivoted, forms a part of the guide for the dog O O is a control lever, pivoted on the pin O It is adapted normally to rest against at its free end the adjustable stop C whereby its rotation in a counter clockwise direction is limited. 0* is a link interposed between the free end of the lever C andftliedog-C? C is a'shacl'ile upon the Worki-n '"end of the lever C connected to a cable U passing over a sheave C on the A frame leg B, and thence leadmg down to the operators position on the dredge,

whereby "the" lever may be 1 rotated and the This *"locking flange is-perfoi'ated as indi-.

cated, and a-bolt-D ,is provided, Itmay pass through-one or other of these perforations to,'change-;t1'1e pivot point of the lever by; rotation of theeccentric bushing, thus providing a take'up for wear and adjustnient inoperation or inassembly of the device.

It *Willbe evident that while Ihaveshown in my drawings an operative device, still many changes-might be made both in size, shape and arrangement of parts without departing materially from thespirit of my invention, I'wish therefore that my drawings be regarded as in asensediagrammatic.

'The use and operation of my invention arej'as fol1oWs: I i V V WVhen the dredge is erected with the :main A frame -in position 3 and the excavating machinery attached to;; and suspended thereby and Communicating therewith, the auxiliary spud supporting A frame is also erected in such manner as to form two rigid triangles having one1com1non side. This furnishes a rigid, 1 integral permanent support upon which the s'pud maybe pivoted, This pivot point," of" course, is; the apex of the small spud'A frame, and projects out overhanging the-side ofth'e barge, Thefstirrup which is to guide and support the spud, "is pivoted at'this pointfthe: spud itself being free to move back and forth, through the stirrup controllechonly by: the hoisting line' which passesaround the sheave adj acent to s such a stirrup and is anchored-on the stirrupvand is connectedto the spud bythesheave at the end thereoffintheffibight of the line. 7 Of co'urse the Winch on the scoW will be' Operated to raise and lower the spud, the spud being permitted ;to fall-, by;gravity-a11d controlled gill its fall by the brakeat the winch. Thestiffnessof the 'A- frame" and-suitable stay andiguidefmembers not-here shown or illustrated 'W'ill -of'course preveiu; the spud fromswinging in-any except the plane generally perpendicular to the axis of the scow.

-i,so7,574

thespud and 'thebarge, of course, limits the movement of-the end ofthe spud to a circle,

as shown in dotted lines about the pivot "point of the arm or leg on thescoW. The path or supporting platform on the end of the spud, of course operates to press against the surface Wherever desired, either at the 66 bottom of the'excavation or on the side, and thus the spud can operate both as a bank spud or as an ordinary vertical spud.

In order that" the spud, once its'p'osition has been assumed, maybe positively locked, 70

so that pressure may be applie'd'to' itfand so that it Will steady the scow in operation, the rack is provided along the inner side of the spud. The dog'engagin'gtherack normally is thrust into engagementthereby by the weight of the levera'rm, andwhenthis dog is in engagement with the rack'there is no possibility of longitudinal"movement' of the spud, because the dog is sostilfened and reinforced, that the longitudinal pressure of the spud will not tend to'move' the dog, and the spud is rigidlyheld in'position. "Vhen the spud is to be manipulated, the operator will pull on the cord, lifting the lever, and

operating thebonnecting link to draw the" dog out of engagement witlithe rack. "The hoisting engine can then be operated to raise or lowerthe spud; and when the spud has reached its proper position, "thedog will again be operated orat'least permitted to operate to lock the spud in position.

I claim;

1. 'A dredge having a main'A frame, a spud supporting A frame erected "on' one 'leg thereof one member of said spud supporting frame" being a 1 compression member pivoted to 'the 'apex 'of the mainA frame; a spud carried by said spud supporting frame.

2. A d'redge having a main A frameya spud supporting A frame erected on-one "leg thereof one member 'of 'saidspud supporting frame being a compression 'mel'nber pivoted J 1 t r to the apex of them am A frame, a 'spud'carried by said spud supporting"fi'a1ne,*saicl spud carr m frame occupyingapproxr 106 matelythelength of oneleg of the"main"A frame. s

In testimony whereof, I aflix'my signature in the presenceof 'twowitnesses thisli29th day'of March 1917. I

c SVANTE R. lVIfBi-XGER. Witnesses PLEHN.

6513165 bfltllis f -t t 8 5 be obtained forfive cents each, by aii'drssing the" Commissioner*oftPateuts,

' Washington, D. G. 

